This is one game in a long string, and one that came just about as easily as they can in the NHL.

So take Tuesday night at the Coliseum for what it was — the Islanders’ best performance this season. The result might have been inflated to a gluttonous 6-0 final because of an Avalanche team that played with hardly a care in the world for the puck, but one that can still sit as a template for what the Islanders need to do to be successful.

“We’re a humble team,” coach Jack Capuano said, his tie loosened, his voice hoarse — and his Islanders now winners of four straight. “Yeah, we’ve had some success, but we have to be able to sustain that. We have to make sure we have that believability and trust in that room, that if we continue to do these little things, we can have success.”

This type of success has not come to the Islanders since Dec. 23 and 26, 2006, the most recent time the franchise had two shutouts in a row, those coming with Rick DiPietro in nets. These two have come with new addition Jaroslav Halak, who sure sounded a lot like another local netminder — a 42-year-old who goes by the name of Marty and currently is looking for a job — when he cited the fact he only saw 20 shots in this game and 19 in the 1-0 win in Arizona on Saturday.

“I always say it’s a team effort,” Halak said. “They kept the shots low, just like last game. They blocked a lot of shots again. It’s always easier when you have these types of games and everyone plays well.”

Everyone on the Islanders (10-5-0) was led by Nikolay Kulemin, another of general manager Garth Snow’s offseason acquisitions who is now playing on the top line next to John Tavares and Kyle Okposo. Kulemin has been the driving force, a strong, reliable, puck-hounding winger the likes of which hasn’t been seen around here in some time.

“He’s just an absolute bull out there,” Tavares said of Kulemin, who had a nifty shorthanded goal in the second period that put the game away, 4-0, just minutes after assisting (and screening) on Travis Hamonic’s second of the season. “He knows his game and plays it well.”

With a goal from Nick Leddy 1:33 in, followed just under four minutes later by a power-play tally from Anders Lee, the Islanders dominated the Avalanche (4-8-5) from start to finish. And with that 4-0 lead going into the third, they didn’t sit back, adding goals from Casey Cizikas and Ryan Strome, making the lively 12,888 inside this crumbling barn start chanting for that seventh goal.

Though that never came, the fans still left in frenzied joy.

The Islanders? Well, they’re supposed to be good now, right? Not overreact to nice wins?

With a back-to-back waiting this weekend in Florida, starting Friday against the Panthers, it also turns out the Islanders — don’t look now — are just one point behind the Penguins atop the Metropolitan Division.

“It’s about habits,” Capuano said. “We’ve created those habits, and now we have to maintain those habits.”